Cindy Anthony said she had run the queries on chloroform while looking up information on chlorophyll, a green pigment found in plants. She believed her dogs may have been eating bamboo leaves containing chlorophyll. Cindy Anthony also said she ran searches on other chemicals, such as hydrogen peroxide, after she was informed about a hand sanitizer scare.

During cross-examination Thursday, prosecutor Linda Drane Burdick suggested that Cindy Anthony never mentioned the searches during depositions and that work records show she was at her job during the time the searches were made on the family’s home computer.

Cindy Anthony responded that she could leave work when she needed to and that the work records might not have reflected her absence.

Sandra Osborne, a computer forensics expert for the Orange County Sheriff’s Office, took the witness stand this morning in the trial of Casey Anthony. Osborne has been called to testify about photos and Internet searches on a computer at Anthony’s home.

Prosecutors have said previously that an Internet search on chloroform was conducted with the computer. Forensics scientists testified this week that high levels of chloroform were found in Anthony’s car. Chloroform is a chemical that is associated with human decomposition but the compound also can be used to render a person unconscious.

Orange County Superior Court Chief Judge Belvin Perry Jr. denied a motion from Anthony’s defense attorney that the evidence was irrelevant. This means that it can be part of next month’s trial as long as prosecutors establish a proper foundation.

“The defendant … failed to meet her burden of proof,” the judge wrote in an order issued Thursday.

The question has been asked for more than a year now. Was there chloroform in the trunk of Casey Anthony’s car? Well, as you know, it’s one of the key evidence issues in the case. So, how did it get there?

Prosecution experts claim traces of the knock-out drug were present in the trunk, but the defense argued the test could have been thrown off by a wet bathing suit of Caylee’s that was left in the vehicle. The defense introduced the new theory to the public during a recent hearing.

Judge Belvin Perry is expected to rule this week whether the evidence will be allowed when the trial starts in May.

The document, which was released as part of more than 900 pages of evidence in the case, shows prosecutors are working to support their theory that chloroform was used to knock out and kill Caylee Anthony.

Prosecutors claim air tests that were run inside of Anthony’s car detected large amounts of chloroform.

Former prosecutor Jeff Deen believes that discovery is central to the theory that Anthony smothered her daughter.

“It’s a huge finding in the case,” he said. “That has a lot to do with premeditation to commit murder or commit another felony, and that is a big, big, big piece of evidence.”

Maya Derkovic told detectives she was friendly with Casey Anthony in the Orange County Jail and that the 24-year-old mother confided in her about drugging her daughter so she could go out, according to a partial transcript the inmate’s interview with investigators. The transcript, along with other documents, was released by the State Attorney’s Office in Orlando.

A spokeswoman for Anthony’s legal team didn’t immediately respond to an e-mail and phone call.

Anthony told another inmate at the jail that Caylee had trouble sleeping and that Anthony would use medicine to put her to sleep, according to the documents. Robyn Adams said in a full transcript of her police interview that Anthony used antihistamines on her daughter. However, a police summary of Adams’ exchange with investigators says that Anthony used chloroform.

A woman who befriended Casey Anthony in jail told investigators that Anthony confided she would “knock out” her 2-year-old daughter, Caylee, so she could go out at night while the child slept, according to a police report.

The inmate, identified in the document as Maya Derkovic, of Ocala, Florida, told police in a jailhouse interview that she used to talk with Anthony through the jail’s ventilation system. She said Anthony told her she regretted having a child so early in life, and gave three different versions of the events surrounding Caylee’s disappearance.

Another inmate, Robyn Adams, of Altamonte Springs, Florida, told investigators that Anthony said she used chloroform on Caylee to help the child sleep, the police report said. The mention of chloroform is significant because investigators found evidence consistent with human decomposition and traces of chloroform in the trunk of a car that belonged to Casey Anthony after Caylee disappeared in June 2008.

Casey Anthony told a fellow inmate details about the death of her two-year-old daughter, Caylee Anthony, that only authorities knew. She also told fellow inmates she would use drugs on Caylee to get the toddler to sleep so she could go out and party.

The explosive allegations are contained in some 500 pages of new evidence from witnesses and detectives in a report on Caylee’s killing released by the Florida State Attorney’s Office. The report includes damning letters to the inmates, and word on conversations she supposedly had with those inmates, reports CBS News Correspondent Betty Nguyen.

According to a source close to the case, three findings buried deep in the forensic evidence could be the link between Casey Anthony and the remains of her daughter, Caylee, which were found in the woods nearly a year ago.

In a report from the so-called “body farm” in Tennessee, Dr. Arpad Vass found a substance called “adipocere,” which is commonly referred to as “grave wax” on paper towels recovered from a trash bag inside Anthony’s car trunk. That dark, flaky substance he said comes from decomposing fatty tissues in humans and pigs.

In a more recent report, entomologist Neil Haskell found coffin flies on the paper towels and inside Anthony’s car trunk. He concluded someone wiped up decomposition fluids in the trunk.

The source within the investigation also points out an FBI lab finding that hairs recovered from Caylee Anthony’s skull and to the single strand with the so-called death band recovered from the trunk.

The FBI report said they exhibit the “the same microscopic characteristics” and are “consistent with originating from the same source.”

While that FBI report states the hairs do not constitute a basis for absolute personal identification, it can be argued the hair from a dead body inside Anthony’s trunk matches strands from Caylee’s skull.